A new type of photonic time crystal gives light a boost

https://phys.org/news/2023-04-photonic-crystal-boost.html

"microwave frequencies amplify electromagnetic waves... 2D metasurface photonic time crystal... reducing dimensionality from 3D to 2D made implementation easier... amplify incident light with high gain... coating surfaces with 2D photonic time crystals could also help with signal decay... removing need for bulk mirrors... more efficient robust wireless communications and significantly improved lasers"

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https://phys.org/news/2024-06-fission-aims-solar-cell-efficiency.html

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